Added 128-bit packed integer subtraction.

llvm-svn: 27096
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 0a9f4b4..01951e6 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -294,6 +294,9 @@
     setOperationAction(ISD::ADD,              MVT::v8i16, Legal);
     setOperationAction(ISD::ADD,              MVT::v4i32, Legal);
     setOperationAction(ISD::SUB,              MVT::v2f64, Legal);
+    setOperationAction(ISD::SUB,              MVT::v16i8, Legal);
+    setOperationAction(ISD::SUB,              MVT::v8i16, Legal);
+    setOperationAction(ISD::SUB,              MVT::v4i32, Legal);
     setOperationAction(ISD::MUL,              MVT::v2f64, Legal);
     setOperationAction(ISD::LOAD,             MVT::v2f64, Legal);
     setOperationAction(ISD::LOAD,             MVT::v16i8, Legal);